8-member ENS forecast with CY49R1.1, nudged to model level AIFS-CRPS. Dec 24-Feb 25

Title 8-member ENS forecast with CY49R1.1, nudged to model level AIFS-CRPS. Dec 24-Feb 25
Description Probabilistic 15-day TCo1279L137 forecast with CY49R1.1. 8 members. Vorticity and virtual temperature below tropopause nudged to equivalent members from model level AIFS-CRPS ML model for total wavenumbers <21. 00/12UTC start from 1 December 2024 to 28 February 2025. Only perturbed forecasts should be analysed.
DOI 10.21957/zbtd-xh41
Experiment ID iwjn
Experiment class ECMWF Research Department
Examples

Retrieve T/U/V for 8 perturbed members and all forecast steps for start date of 1 December 2024

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2024-12-01",
    "expver": "iwjn",
    "levelist": "10/30/50/70/100/200/250/500/700/850/925/1000",
    "levtype": "pl",
    "number": "1/2/3/4/5/6/7/8",
    "param": "130.128/131/132",
    "step": "0/12/24/36/48/60/72/84/96/108/120/132/144/156/168/180/192/204/216/228/240/252/264/276/288/300/312/324/336/348/360",
    "stream": "enfo",
    "target": "output",
    "time": "00:00:00",
    "type": "pf"
})

Retrieve 2m t for all perturbed members and all forecast steps for start date of 1 December 2024

#!/usr/bin/env python
from ecmwfapi import ECMWFDataServer

server = ECMWFDataServer()

server.retrieve({
    "class": "rd",
    "dataset": "research",
    "date": "2024-12-01",
    "expver": "iwjn",
    "levtype": "sfc",
    "number": "1/2/3/4/5/6/7/8",
    "param": "167.128",
    "step": "0/6/12/18/24/30/36/42/48/54/60/66/72/78/84/90/96/102/108/114/120/126/132/138/144/150/156/162/168/174/180/186/192/198/204/210/216/222/228/234/240/246/252/258/264/270/276/282/288/294/300/306/312/318/324/330/336/342/348/354/360",
    "stream": "enfo",
    "target": "output",
    "time": "00:00:00",
    "type": "pf"
})